<!doctype html>
<html lang="en">
  <head>
    <title>Title</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" >
  </head>
  <body>
    <div class="container">
      <div class="form-group mt-3">
        key:<input type="text" class="form-control" name="" id="key" aria-describedby="helpId" placeholder="">
        value:<input type="text" class="form-control mb-3" name="" id="value" aria-describedby="helpId" placeholder="">
        <button class="btn btn-primary" href="#" id="btnAdd"  role="button">存数据</button>
        <button class="btn btn-primary" href="#" id="btnGet"  role="button">取数据</button>
        <button class="btn btn-primary" href="#" id="btnRemove"  role="button">删除数据</button>
        <button class="btn btn-primary" href="#" id="btnClear"  role="button">清空数据</button>
        <button class="btn btn-primary" href="#" id="btnAddObj"  role="button">存对象</button>
        <button class="btn btn-primary" href="#" id="btnGetObj"  role="button">取对象</button>
      </div>    
    </div>
    <!-- <script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js'></script> -->
    <script src="index.js"></script>
  </body>
</html>